New Buffalo, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 16.8 °C (high). Annual precipitation averages 1192.3 Millimeters. New Buffalo is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6 °C | 2.9 °C | 82.3 mm |
| February | -5.3 °C | 4.6 °C | 66.29 mm |
| March | -1.2 °C | 9.7 °C | 95.5 mm |
| April | 4.6 °C | 16.9 °C | 99.82 mm |
| May | 10.2 °C | 22.3 °C | 106.93 mm |
| June | 15.2 °C | 27.1 °C | 108.46 mm |
| July | 17.6 °C | 29.6 °C | 116.33 mm |
| August | 16.7 °C | 28.6 °C | 111.51 mm |
| September | 12.7 °C | 24.8 °C | 126.49 mm |
| October | 6.3 °C | 18 °C | 107.7 mm |
| November | 1 °C | 11.6 °C | 81.03 mm |
| December | -3.1 °C | 5.4 °C | 89.92 mm |
| Annual | 5.7 °C | 16.8 °C | 1192.28 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |